./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:46:30,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:46:30,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:46:30,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:46:30,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:46:30,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:46:30,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:46:30,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:46:30,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:46:30,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:46:30,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:46:30,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:46:30,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:46:30,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:46:30,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:46:30,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:46:30,209 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:46:30,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:46:30,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:46:30,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:46:30,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:46:30,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:46:30,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:46:30,211 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2024-12-02 12:46:30,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:46:30,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:46:30,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:46:30,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:46:30,450 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:46:30,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2024-12-02 12:46:33,033 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/data/fced73f47/fbe20a6fd4eb42c6ae30ad65a74a27dc/FLAG89320e752 [2024-12-02 12:46:33,322 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:46:33,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2024-12-02 12:46:33,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/data/fced73f47/fbe20a6fd4eb42c6ae30ad65a74a27dc/FLAG89320e752 [2024-12-02 12:46:33,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/data/fced73f47/fbe20a6fd4eb42c6ae30ad65a74a27dc [2024-12-02 12:46:33,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:46:33,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:46:33,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:46:33,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:46:33,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:46:33,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:46:33" (1/1) ... [2024-12-02 12:46:33,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659286ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:33, skipping insertion in model container [2024-12-02 12:46:33,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:46:33" (1/1) ... [2024-12-02 12:46:33,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:46:34,043 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2024-12-02 12:46:34,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:46:34,057 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:46:34,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1128] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1288] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1305] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1671] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2072] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2469] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2489] [2024-12-02 12:46:34,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2788] [2024-12-02 12:46:34,065 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3007] [2024-12-02 12:46:34,065 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3042] [2024-12-02 12:46:34,153 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2024-12-02 12:46:34,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:46:34,177 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:46:34,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34 WrapperNode [2024-12-02 12:46:34,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:46:34,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:46:34,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:46:34,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:46:34,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,243 INFO L138 Inliner]: procedures = 134, calls = 211, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1072 [2024-12-02 12:46:34,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:46:34,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:46:34,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:46:34,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:46:34,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,280 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-12-02 12:46:34,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,296 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:46:34,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:46:34,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:46:34,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:46:34,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (1/1) ... [2024-12-02 12:46:34,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:46:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:34,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:46:34,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:46:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 12:46:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 12:46:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 12:46:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 12:46:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 12:46:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 12:46:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 12:46:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 12:46:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 12:46:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:46:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:46:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 12:46:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 12:46:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:46:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:46:34,563 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:46:34,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:46:35,397 INFO L? ?]: Removed 500 outVars from TransFormulas that were not future-live. [2024-12-02 12:46:35,397 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:46:35,414 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:46:35,414 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:46:35,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:46:35 BoogieIcfgContainer [2024-12-02 12:46:35,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:46:35,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:46:35,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:46:35,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:46:35,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:46:33" (1/3) ... [2024-12-02 12:46:35,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1251aea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:46:35, skipping insertion in model container [2024-12-02 12:46:35,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:46:34" (2/3) ... [2024-12-02 12:46:35,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1251aea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:46:35, skipping insertion in model container [2024-12-02 12:46:35,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:46:35" (3/3) ... [2024-12-02 12:46:35,423 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2024-12-02 12:46:35,434 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:46:35,436 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec11_product33.cil.c that has 25 procedures, 384 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:46:35,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:46:35,497 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a46731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:46:35,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:46:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 296 states have (on average 1.5033783783783783) internal successors, (445), 300 states have internal predecessors, (445), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-12-02 12:46:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 12:46:35,516 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:35,517 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:35,517 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:35,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1337990519, now seen corresponding path program 1 times [2024-12-02 12:46:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866070396] [2024-12-02 12:46:35,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:46:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866070396] [2024-12-02 12:46:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866070396] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:36,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646151132] [2024-12-02 12:46:36,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:36,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:36,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:36,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:36,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:46:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:36,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:46:36,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 12:46:36,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646151132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 12:46:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116782950] [2024-12-02 12:46:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:36,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:46:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:36,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:46:36,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:36,529 INFO L87 Difference]: Start difference. First operand has 384 states, 296 states have (on average 1.5033783783783783) internal successors, (445), 300 states have internal predecessors, (445), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:36,582 INFO L93 Difference]: Finished difference Result 610 states and 885 transitions. [2024-12-02 12:46:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:46:36,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2024-12-02 12:46:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:36,594 INFO L225 Difference]: With dead ends: 610 [2024-12-02 12:46:36,594 INFO L226 Difference]: Without dead ends: 377 [2024-12-02 12:46:36,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:36,600 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:36,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-12-02 12:46:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-12-02 12:46:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 290 states have (on average 1.4965517241379311) internal successors, (434), 293 states have internal predecessors, (434), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-12-02 12:46:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 557 transitions. [2024-12-02 12:46:36,665 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 557 transitions. Word has length 139 [2024-12-02 12:46:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:36,667 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 557 transitions. [2024-12-02 12:46:36,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 557 transitions. [2024-12-02 12:46:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 12:46:36,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:36,672 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:36,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:46:36,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:36,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:36,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -213216829, now seen corresponding path program 1 times [2024-12-02 12:46:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104506376] [2024-12-02 12:46:36,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:46:37,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104506376] [2024-12-02 12:46:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104506376] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017525967] [2024-12-02 12:46:37,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:37,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:37,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:37,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:37,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:46:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:37,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:46:37,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 12:46:37,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:37,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017525967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:37,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:37,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:37,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830220694] [2024-12-02 12:46:37,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:37,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:37,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:37,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:37,567 INFO L87 Difference]: Start difference. First operand 377 states and 557 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:37,609 INFO L93 Difference]: Finished difference Result 599 states and 865 transitions. [2024-12-02 12:46:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2024-12-02 12:46:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:37,614 INFO L225 Difference]: With dead ends: 599 [2024-12-02 12:46:37,614 INFO L226 Difference]: Without dead ends: 379 [2024-12-02 12:46:37,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:37,616 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 1 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:37,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-12-02 12:46:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 378. [2024-12-02 12:46:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-12-02 12:46:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2024-12-02 12:46:37,643 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 139 [2024-12-02 12:46:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:37,644 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2024-12-02 12:46:37,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2024-12-02 12:46:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 12:46:37,647 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:37,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:37,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:46:37,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 12:46:37,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:37,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1161383664, now seen corresponding path program 1 times [2024-12-02 12:46:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791609846] [2024-12-02 12:46:37,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791609846] [2024-12-02 12:46:38,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791609846] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035397119] [2024-12-02 12:46:38,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:38,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:38,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:38,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:38,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:46:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:38,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:38,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 12:46:38,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035397119] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:38,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153180085] [2024-12-02 12:46:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:38,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:38,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:38,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:38,531 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:38,567 INFO L93 Difference]: Finished difference Result 791 states and 1183 transitions. [2024-12-02 12:46:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:38,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-12-02 12:46:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:38,571 INFO L225 Difference]: With dead ends: 791 [2024-12-02 12:46:38,572 INFO L226 Difference]: Without dead ends: 439 [2024-12-02 12:46:38,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:38,574 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 115 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:38,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1078 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-12-02 12:46:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 431. [2024-12-02 12:46:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 333 states have (on average 1.5135135135135136) internal successors, (504), 336 states have internal predecessors, (504), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 12:46:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 649 transitions. [2024-12-02 12:46:38,597 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 649 transitions. Word has length 147 [2024-12-02 12:46:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:38,598 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 649 transitions. [2024-12-02 12:46:38,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 649 transitions. [2024-12-02 12:46:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 12:46:38,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:38,601 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:38,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:46:38,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 12:46:38,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:38,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:38,802 INFO L85 PathProgramCache]: Analyzing trace with hash 876000429, now seen corresponding path program 1 times [2024-12-02 12:46:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:38,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080004854] [2024-12-02 12:46:38,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:38,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080004854] [2024-12-02 12:46:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080004854] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391213646] [2024-12-02 12:46:39,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:39,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:39,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:46:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:39,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:46:39,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 12:46:39,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391213646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:39,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 12:46:39,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146889954] [2024-12-02 12:46:39,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:39,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:39,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:39,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:39,412 INFO L87 Difference]: Start difference. First operand 431 states and 649 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:39,477 INFO L93 Difference]: Finished difference Result 853 states and 1288 transitions. [2024-12-02 12:46:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2024-12-02 12:46:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:39,480 INFO L225 Difference]: With dead ends: 853 [2024-12-02 12:46:39,481 INFO L226 Difference]: Without dead ends: 433 [2024-12-02 12:46:39,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:39,483 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 2 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:39,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2185 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-12-02 12:46:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2024-12-02 12:46:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 334 states have (on average 1.5119760479041917) internal successors, (505), 338 states have internal predecessors, (505), 73 states have call successors, (73), 24 states have call predecessors, (73), 25 states have return successors, (74), 72 states have call predecessors, (74), 72 states have call successors, (74) [2024-12-02 12:46:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 652 transitions. [2024-12-02 12:46:39,503 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 652 transitions. Word has length 148 [2024-12-02 12:46:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:39,503 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 652 transitions. [2024-12-02 12:46:39,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 652 transitions. [2024-12-02 12:46:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 12:46:39,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:39,506 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:39,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:46:39,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:39,707 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:39,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1401471874, now seen corresponding path program 1 times [2024-12-02 12:46:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424439357] [2024-12-02 12:46:39,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:46:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424439357] [2024-12-02 12:46:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424439357] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984027346] [2024-12-02 12:46:39,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:39,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:39,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:46:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:40,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:46:40,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 12:46:40,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984027346] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:40,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:40,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 12:46:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854920244] [2024-12-02 12:46:40,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:40,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:40,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:40,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:46:40,305 INFO L87 Difference]: Start difference. First operand 433 states and 652 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:40,375 INFO L93 Difference]: Finished difference Result 855 states and 1293 transitions. [2024-12-02 12:46:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 149 [2024-12-02 12:46:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:40,379 INFO L225 Difference]: With dead ends: 855 [2024-12-02 12:46:40,379 INFO L226 Difference]: Without dead ends: 435 [2024-12-02 12:46:40,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:46:40,382 INFO L435 NwaCegarLoop]: 547 mSDtfsCounter, 2 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:40,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2171 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-12-02 12:46:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2024-12-02 12:46:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 335 states have (on average 1.51044776119403) internal successors, (506), 340 states have internal predecessors, (506), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2024-12-02 12:46:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 658 transitions. [2024-12-02 12:46:40,403 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 658 transitions. Word has length 149 [2024-12-02 12:46:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:40,404 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 658 transitions. [2024-12-02 12:46:40,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 658 transitions. [2024-12-02 12:46:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 12:46:40,407 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:40,407 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:40,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:46:40,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:40,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:40,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash 730075856, now seen corresponding path program 1 times [2024-12-02 12:46:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051284520] [2024-12-02 12:46:40,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:40,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051284520] [2024-12-02 12:46:40,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051284520] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:40,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:46:40,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911653350] [2024-12-02 12:46:40,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:40,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:40,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:40,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:40,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:40,795 INFO L87 Difference]: Start difference. First operand 435 states and 658 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:40,846 INFO L93 Difference]: Finished difference Result 847 states and 1284 transitions. [2024-12-02 12:46:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2024-12-02 12:46:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:40,850 INFO L225 Difference]: With dead ends: 847 [2024-12-02 12:46:40,850 INFO L226 Difference]: Without dead ends: 435 [2024-12-02 12:46:40,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:40,852 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 2 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:40,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2189 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-12-02 12:46:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2024-12-02 12:46:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 335 states have (on average 1.51044776119403) internal successors, (506), 340 states have internal predecessors, (506), 73 states have call successors, (73), 24 states have call predecessors, (73), 26 states have return successors, (78), 72 states have call predecessors, (78), 72 states have call successors, (78) [2024-12-02 12:46:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 657 transitions. [2024-12-02 12:46:40,874 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 657 transitions. Word has length 150 [2024-12-02 12:46:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:40,874 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 657 transitions. [2024-12-02 12:46:40,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 657 transitions. [2024-12-02 12:46:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 12:46:40,877 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:40,877 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:40,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:46:40,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:40,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1192796419, now seen corresponding path program 2 times [2024-12-02 12:46:40,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:40,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294104417] [2024-12-02 12:46:40,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:46:40,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:40,909 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 12:46:40,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:46:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:46:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294104417] [2024-12-02 12:46:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294104417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:46:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274647102] [2024-12-02 12:46:41,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:41,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:46:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:41,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:46:41,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:41,065 INFO L87 Difference]: Start difference. First operand 435 states and 657 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:41,592 INFO L93 Difference]: Finished difference Result 1020 states and 1548 transitions. [2024-12-02 12:46:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:46:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2024-12-02 12:46:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:41,599 INFO L225 Difference]: With dead ends: 1020 [2024-12-02 12:46:41,599 INFO L226 Difference]: Without dead ends: 806 [2024-12-02 12:46:41,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:46:41,601 INFO L435 NwaCegarLoop]: 633 mSDtfsCounter, 1063 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:41,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3299 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:46:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-12-02 12:46:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 722. [2024-12-02 12:46:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 563 states have (on average 1.5488454706927175) internal successors, (872), 569 states have internal predecessors, (872), 116 states have call successors, (116), 41 states have call predecessors, (116), 42 states have return successors, (131), 114 states have call predecessors, (131), 115 states have call successors, (131) [2024-12-02 12:46:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1119 transitions. [2024-12-02 12:46:41,642 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1119 transitions. Word has length 151 [2024-12-02 12:46:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:41,642 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1119 transitions. [2024-12-02 12:46:41,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1119 transitions. [2024-12-02 12:46:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 12:46:41,647 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:41,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:41,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:46:41,647 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:41,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash 198431669, now seen corresponding path program 1 times [2024-12-02 12:46:41,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:41,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736811929] [2024-12-02 12:46:41,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:41,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736811929] [2024-12-02 12:46:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736811929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:46:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209046322] [2024-12-02 12:46:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:41,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:41,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:41,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:41,847 INFO L87 Difference]: Start difference. First operand 722 states and 1119 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:41,911 INFO L93 Difference]: Finished difference Result 1413 states and 2198 transitions. [2024-12-02 12:46:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2024-12-02 12:46:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:41,917 INFO L225 Difference]: With dead ends: 1413 [2024-12-02 12:46:41,917 INFO L226 Difference]: Without dead ends: 726 [2024-12-02 12:46:41,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:41,920 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:41,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2192 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-12-02 12:46:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2024-12-02 12:46:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 565 states have (on average 1.5469026548672566) internal successors, (874), 573 states have internal predecessors, (874), 116 states have call successors, (116), 41 states have call predecessors, (116), 44 states have return successors, (134), 114 states have call predecessors, (134), 115 states have call successors, (134) [2024-12-02 12:46:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1124 transitions. [2024-12-02 12:46:41,956 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1124 transitions. Word has length 152 [2024-12-02 12:46:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:41,956 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1124 transitions. [2024-12-02 12:46:41,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1124 transitions. [2024-12-02 12:46:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 12:46:41,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:41,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:41,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:46:41,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1388264529, now seen corresponding path program 1 times [2024-12-02 12:46:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413883954] [2024-12-02 12:46:41,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413883954] [2024-12-02 12:46:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413883954] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:42,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:42,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:46:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350942437] [2024-12-02 12:46:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:42,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:42,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:42,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:42,124 INFO L87 Difference]: Start difference. First operand 726 states and 1124 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:42,180 INFO L93 Difference]: Finished difference Result 1417 states and 2203 transitions. [2024-12-02 12:46:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:42,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2024-12-02 12:46:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:42,185 INFO L225 Difference]: With dead ends: 1417 [2024-12-02 12:46:42,185 INFO L226 Difference]: Without dead ends: 730 [2024-12-02 12:46:42,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:46:42,188 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 0 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:42,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2185 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-12-02 12:46:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 726. [2024-12-02 12:46:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 565 states have (on average 1.5469026548672566) internal successors, (874), 573 states have internal predecessors, (874), 116 states have call successors, (116), 41 states have call predecessors, (116), 44 states have return successors, (134), 114 states have call predecessors, (134), 115 states have call successors, (134) [2024-12-02 12:46:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1124 transitions. [2024-12-02 12:46:42,223 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1124 transitions. Word has length 153 [2024-12-02 12:46:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:42,223 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1124 transitions. [2024-12-02 12:46:42,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1124 transitions. [2024-12-02 12:46:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 12:46:42,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:42,227 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:42,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:46:42,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:42,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash 333738157, now seen corresponding path program 1 times [2024-12-02 12:46:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151630302] [2024-12-02 12:46:42,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:46:42,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:42,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151630302] [2024-12-02 12:46:42,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151630302] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:42,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:42,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:46:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705700547] [2024-12-02 12:46:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:42,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:46:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:42,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:46:42,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:42,405 INFO L87 Difference]: Start difference. First operand 726 states and 1124 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 12:46:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:42,555 INFO L93 Difference]: Finished difference Result 1412 states and 2191 transitions. [2024-12-02 12:46:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:46:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2024-12-02 12:46:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:42,560 INFO L225 Difference]: With dead ends: 1412 [2024-12-02 12:46:42,560 INFO L226 Difference]: Without dead ends: 730 [2024-12-02 12:46:42,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:46:42,563 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 7 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:42,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3758 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:46:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-12-02 12:46:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2024-12-02 12:46:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 567 states have (on average 1.5449735449735449) internal successors, (876), 574 states have internal predecessors, (876), 116 states have call successors, (116), 42 states have call predecessors, (116), 44 states have return successors, (132), 114 states have call predecessors, (132), 115 states have call successors, (132) [2024-12-02 12:46:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1124 transitions. [2024-12-02 12:46:42,601 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1124 transitions. Word has length 153 [2024-12-02 12:46:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:42,602 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1124 transitions. [2024-12-02 12:46:42,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 12:46:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1124 transitions. [2024-12-02 12:46:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 12:46:42,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:42,606 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:42,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:46:42,606 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:42,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -710753383, now seen corresponding path program 1 times [2024-12-02 12:46:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213010862] [2024-12-02 12:46:42,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 12:46:42,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:42,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213010862] [2024-12-02 12:46:42,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213010862] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:42,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409031097] [2024-12-02 12:46:42,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:42,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:42,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:42,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:42,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:46:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:43,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:46:43,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 12:46:43,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:43,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409031097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:43,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:43,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 12:46:43,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307349004] [2024-12-02 12:46:43,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:43,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:43,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:43,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:43,136 INFO L87 Difference]: Start difference. First operand 728 states and 1124 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:43,200 INFO L93 Difference]: Finished difference Result 1241 states and 1895 transitions. [2024-12-02 12:46:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2024-12-02 12:46:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:43,206 INFO L225 Difference]: With dead ends: 1241 [2024-12-02 12:46:43,206 INFO L226 Difference]: Without dead ends: 734 [2024-12-02 12:46:43,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:43,208 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 1 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:43,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2182 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-12-02 12:46:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 730. [2024-12-02 12:46:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 568 states have (on average 1.5440140845070423) internal successors, (877), 576 states have internal predecessors, (877), 116 states have call successors, (116), 42 states have call predecessors, (116), 45 states have return successors, (135), 114 states have call predecessors, (135), 115 states have call successors, (135) [2024-12-02 12:46:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1128 transitions. [2024-12-02 12:46:43,245 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1128 transitions. Word has length 155 [2024-12-02 12:46:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:43,245 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1128 transitions. [2024-12-02 12:46:43,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1128 transitions. [2024-12-02 12:46:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 12:46:43,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:43,250 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:43,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 12:46:43,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:43,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:43,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1088380062, now seen corresponding path program 1 times [2024-12-02 12:46:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89664618] [2024-12-02 12:46:43,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 12:46:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89664618] [2024-12-02 12:46:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89664618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403143945] [2024-12-02 12:46:43,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:43,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:43,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:46:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:43,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:46:43,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 12:46:43,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403143945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 12:46:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310815269] [2024-12-02 12:46:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:43,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:46:43,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:43,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:46:43,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:43,979 INFO L87 Difference]: Start difference. First operand 730 states and 1128 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:44,047 INFO L93 Difference]: Finished difference Result 1421 states and 2207 transitions. [2024-12-02 12:46:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:46:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2024-12-02 12:46:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:44,053 INFO L225 Difference]: With dead ends: 1421 [2024-12-02 12:46:44,053 INFO L226 Difference]: Without dead ends: 736 [2024-12-02 12:46:44,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:46:44,056 INFO L435 NwaCegarLoop]: 547 mSDtfsCounter, 1 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:44,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2171 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-12-02 12:46:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2024-12-02 12:46:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.5421052631578946) internal successors, (879), 580 states have internal predecessors, (879), 116 states have call successors, (116), 42 states have call predecessors, (116), 47 states have return successors, (141), 114 states have call predecessors, (141), 115 states have call successors, (141) [2024-12-02 12:46:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1136 transitions. [2024-12-02 12:46:44,092 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1136 transitions. Word has length 156 [2024-12-02 12:46:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:44,092 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1136 transitions. [2024-12-02 12:46:44,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 12:46:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1136 transitions. [2024-12-02 12:46:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 12:46:44,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:44,096 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:44,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 12:46:44,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:44,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:44,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1668093070, now seen corresponding path program 1 times [2024-12-02 12:46:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488710501] [2024-12-02 12:46:44,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:46:44,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:44,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488710501] [2024-12-02 12:46:44,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488710501] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:44,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925547031] [2024-12-02 12:46:44,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:44,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:44,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:44,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:44,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:46:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:44,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:44,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:44,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:46:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925547031] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:46:44,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:46:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-12-02 12:46:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116529838] [2024-12-02 12:46:44,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:46:44,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:46:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:44,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:46:44,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:46:44,970 INFO L87 Difference]: Start difference. First operand 734 states and 1136 transitions. Second operand has 11 states, 10 states have (on average 14.8) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-12-02 12:46:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:45,587 INFO L93 Difference]: Finished difference Result 2147 states and 3481 transitions. [2024-12-02 12:46:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:46:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.8) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 155 [2024-12-02 12:46:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:45,596 INFO L225 Difference]: With dead ends: 2147 [2024-12-02 12:46:45,597 INFO L226 Difference]: Without dead ends: 1462 [2024-12-02 12:46:45,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:46:45,600 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 1230 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:45,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 3928 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:46:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2024-12-02 12:46:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1428. [2024-12-02 12:46:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1136 states have (on average 1.5924295774647887) internal successors, (1809), 1146 states have internal predecessors, (1809), 244 states have call successors, (244), 42 states have call predecessors, (244), 47 states have return successors, (294), 242 states have call predecessors, (294), 243 states have call successors, (294) [2024-12-02 12:46:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2347 transitions. [2024-12-02 12:46:45,694 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2347 transitions. Word has length 155 [2024-12-02 12:46:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:45,695 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 2347 transitions. [2024-12-02 12:46:45,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.8) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-12-02 12:46:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2347 transitions. [2024-12-02 12:46:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 12:46:45,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:45,704 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:45,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:46:45,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:45,904 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:45,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash -405835847, now seen corresponding path program 1 times [2024-12-02 12:46:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638772107] [2024-12-02 12:46:45,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638772107] [2024-12-02 12:46:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638772107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:46:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336100453] [2024-12-02 12:46:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:45,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:45,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:45,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:45,997 INFO L87 Difference]: Start difference. First operand 1428 states and 2347 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:46,091 INFO L93 Difference]: Finished difference Result 3359 states and 5613 transitions. [2024-12-02 12:46:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2024-12-02 12:46:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:46,104 INFO L225 Difference]: With dead ends: 3359 [2024-12-02 12:46:46,104 INFO L226 Difference]: Without dead ends: 2074 [2024-12-02 12:46:46,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:46,110 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 112 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:46,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1105 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2024-12-02 12:46:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2064. [2024-12-02 12:46:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1644 states have (on average 1.6088807785888077) internal successors, (2645), 1654 states have internal predecessors, (2645), 372 states have call successors, (372), 42 states have call predecessors, (372), 47 states have return successors, (447), 370 states have call predecessors, (447), 371 states have call successors, (447) [2024-12-02 12:46:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3464 transitions. [2024-12-02 12:46:46,224 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3464 transitions. Word has length 159 [2024-12-02 12:46:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:46,224 INFO L471 AbstractCegarLoop]: Abstraction has 2064 states and 3464 transitions. [2024-12-02 12:46:46,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3464 transitions. [2024-12-02 12:46:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 12:46:46,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:46,235 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:46,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:46:46,235 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:46,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash 386672261, now seen corresponding path program 1 times [2024-12-02 12:46:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98668846] [2024-12-02 12:46:46,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:46,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98668846] [2024-12-02 12:46:46,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98668846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:46,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:46,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:46:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558284535] [2024-12-02 12:46:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:46,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:46,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:46,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:46,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:46,301 INFO L87 Difference]: Start difference. First operand 2064 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:46,383 INFO L93 Difference]: Finished difference Result 4935 states and 8340 transitions. [2024-12-02 12:46:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:46,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-12-02 12:46:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:46,399 INFO L225 Difference]: With dead ends: 4935 [2024-12-02 12:46:46,399 INFO L226 Difference]: Without dead ends: 3116 [2024-12-02 12:46:46,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:46,406 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 110 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:46,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2024-12-02 12:46:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3106. [2024-12-02 12:46:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 2496 states have (on average 1.6157852564102564) internal successors, (4033), 2506 states have internal predecessors, (4033), 562 states have call successors, (562), 42 states have call predecessors, (562), 47 states have return successors, (653), 560 states have call predecessors, (653), 561 states have call successors, (653) [2024-12-02 12:46:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5248 transitions. [2024-12-02 12:46:46,571 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5248 transitions. Word has length 160 [2024-12-02 12:46:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:46,571 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 5248 transitions. [2024-12-02 12:46:46,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5248 transitions. [2024-12-02 12:46:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 12:46:46,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:46,585 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:46,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:46:46,585 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:46,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -948319957, now seen corresponding path program 1 times [2024-12-02 12:46:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606737148] [2024-12-02 12:46:46,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:46,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:46,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:46,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606737148] [2024-12-02 12:46:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606737148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:46,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:46,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:46:46,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927739466] [2024-12-02 12:46:46,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:46,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:46,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:46,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:46,666 INFO L87 Difference]: Start difference. First operand 3106 states and 5248 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:46,788 INFO L93 Difference]: Finished difference Result 7293 states and 12422 transitions. [2024-12-02 12:46:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2024-12-02 12:46:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:46,811 INFO L225 Difference]: With dead ends: 7293 [2024-12-02 12:46:46,811 INFO L226 Difference]: Without dead ends: 4694 [2024-12-02 12:46:46,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:46,819 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 108 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:46,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1101 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2024-12-02 12:46:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4684. [2024-12-02 12:46:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 3828 states have (on average 1.621473354231975) internal successors, (6207), 3838 states have internal predecessors, (6207), 808 states have call successors, (808), 42 states have call predecessors, (808), 47 states have return successors, (949), 806 states have call predecessors, (949), 807 states have call successors, (949) [2024-12-02 12:46:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 7964 transitions. [2024-12-02 12:46:47,027 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 7964 transitions. Word has length 161 [2024-12-02 12:46:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:47,027 INFO L471 AbstractCegarLoop]: Abstraction has 4684 states and 7964 transitions. [2024-12-02 12:46:47,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 7964 transitions. [2024-12-02 12:46:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 12:46:47,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:47,046 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:47,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:46:47,046 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:47,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1698829155, now seen corresponding path program 1 times [2024-12-02 12:46:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374580377] [2024-12-02 12:46:47,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:46:47,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:47,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374580377] [2024-12-02 12:46:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374580377] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978260392] [2024-12-02 12:46:47,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:47,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:47,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:47,160 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:46:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:47,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:47,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:46:47,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978260392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593086694] [2024-12-02 12:46:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:47,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:47,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:47,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:47,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:47,568 INFO L87 Difference]: Start difference. First operand 4684 states and 7964 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:47,744 INFO L93 Difference]: Finished difference Result 10969 states and 18788 transitions. [2024-12-02 12:46:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2024-12-02 12:46:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:47,782 INFO L225 Difference]: With dead ends: 10969 [2024-12-02 12:46:47,782 INFO L226 Difference]: Without dead ends: 7216 [2024-12-02 12:46:47,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:47,794 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 106 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:47,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1101 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2024-12-02 12:46:48,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 7206. [2024-12-02 12:46:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7206 states, 5992 states have (on average 1.625) internal successors, (9737), 6002 states have internal predecessors, (9737), 1166 states have call successors, (1166), 42 states have call predecessors, (1166), 47 states have return successors, (1390), 1164 states have call predecessors, (1390), 1165 states have call successors, (1390) [2024-12-02 12:46:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7206 states to 7206 states and 12293 transitions. [2024-12-02 12:46:48,125 INFO L78 Accepts]: Start accepts. Automaton has 7206 states and 12293 transitions. Word has length 164 [2024-12-02 12:46:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:48,126 INFO L471 AbstractCegarLoop]: Abstraction has 7206 states and 12293 transitions. [2024-12-02 12:46:48,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7206 states and 12293 transitions. [2024-12-02 12:46:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 12:46:48,153 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:48,153 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:48,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:46:48,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:46:48,353 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:48,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1825055946, now seen corresponding path program 1 times [2024-12-02 12:46:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284708414] [2024-12-02 12:46:48,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:46:48,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284708414] [2024-12-02 12:46:48,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284708414] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105453341] [2024-12-02 12:46:48,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:48,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:48,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:46:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:48,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:48,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:46:48,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105453341] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989645813] [2024-12-02 12:46:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:48,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:48,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:48,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:48,855 INFO L87 Difference]: Start difference. First operand 7206 states and 12293 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:49,126 INFO L93 Difference]: Finished difference Result 17021 states and 29253 transitions. [2024-12-02 12:46:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2024-12-02 12:46:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:49,172 INFO L225 Difference]: With dead ends: 17021 [2024-12-02 12:46:49,172 INFO L226 Difference]: Without dead ends: 11388 [2024-12-02 12:46:49,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:49,188 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 104 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:49,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1118 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11388 states. [2024-12-02 12:46:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11388 to 11378. [2024-12-02 12:46:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11378 states, 9412 states have (on average 1.6191032724181895) internal successors, (15239), 9422 states have internal predecessors, (15239), 1918 states have call successors, (1918), 42 states have call predecessors, (1918), 47 states have return successors, (2286), 1916 states have call predecessors, (2286), 1917 states have call successors, (2286) [2024-12-02 12:46:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11378 states to 11378 states and 19443 transitions. [2024-12-02 12:46:49,766 INFO L78 Accepts]: Start accepts. Automaton has 11378 states and 19443 transitions. Word has length 165 [2024-12-02 12:46:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:49,766 INFO L471 AbstractCegarLoop]: Abstraction has 11378 states and 19443 transitions. [2024-12-02 12:46:49,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11378 states and 19443 transitions. [2024-12-02 12:46:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 12:46:49,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:49,813 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:49,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:46:50,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:46:50,013 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:50,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1817639129, now seen corresponding path program 1 times [2024-12-02 12:46:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:50,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811399301] [2024-12-02 12:46:50,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:46:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811399301] [2024-12-02 12:46:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811399301] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67513738] [2024-12-02 12:46:50,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:50,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:50,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:50,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:46:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:50,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:50,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:46:50,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67513738] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830251716] [2024-12-02 12:46:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:50,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:50,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:50,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:50,482 INFO L87 Difference]: Start difference. First operand 11378 states and 19443 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:50,796 INFO L93 Difference]: Finished difference Result 27989 states and 48063 transitions. [2024-12-02 12:46:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2024-12-02 12:46:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:50,845 INFO L225 Difference]: With dead ends: 27989 [2024-12-02 12:46:50,846 INFO L226 Difference]: Without dead ends: 18956 [2024-12-02 12:46:50,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:50,864 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 102 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:50,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1112 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2024-12-02 12:46:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 18946. [2024-12-02 12:46:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18946 states, 15768 states have (on average 1.616501775748351) internal successors, (25489), 15778 states have internal predecessors, (25489), 3130 states have call successors, (3130), 42 states have call predecessors, (3130), 47 states have return successors, (3687), 3128 states have call predecessors, (3687), 3129 states have call successors, (3687) [2024-12-02 12:46:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18946 states to 18946 states and 32306 transitions. [2024-12-02 12:46:51,612 INFO L78 Accepts]: Start accepts. Automaton has 18946 states and 32306 transitions. Word has length 166 [2024-12-02 12:46:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:51,612 INFO L471 AbstractCegarLoop]: Abstraction has 18946 states and 32306 transitions. [2024-12-02 12:46:51,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 18946 states and 32306 transitions. [2024-12-02 12:46:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 12:46:51,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:51,665 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:51,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:46:51,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:51,866 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:51,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 884691393, now seen corresponding path program 1 times [2024-12-02 12:46:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:51,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695226271] [2024-12-02 12:46:51,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:46:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695226271] [2024-12-02 12:46:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695226271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:51,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:46:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:46:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758115978] [2024-12-02 12:46:51,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:51,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:51,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:51,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:51,929 INFO L87 Difference]: Start difference. First operand 18946 states and 32306 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:52,759 INFO L93 Difference]: Finished difference Result 48931 states and 83763 transitions. [2024-12-02 12:46:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2024-12-02 12:46:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:52,881 INFO L225 Difference]: With dead ends: 48931 [2024-12-02 12:46:52,881 INFO L226 Difference]: Without dead ends: 33250 [2024-12-02 12:46:52,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:46:52,932 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 100 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:52,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33250 states. [2024-12-02 12:46:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33250 to 33240. [2024-12-02 12:46:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33240 states, 27656 states have (on average 1.6072100086780445) internal successors, (44449), 27666 states have internal predecessors, (44449), 5536 states have call successors, (5536), 42 states have call predecessors, (5536), 47 states have return successors, (6518), 5534 states have call predecessors, (6518), 5535 states have call successors, (6518) [2024-12-02 12:46:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33240 states to 33240 states and 56503 transitions. [2024-12-02 12:46:54,195 INFO L78 Accepts]: Start accepts. Automaton has 33240 states and 56503 transitions. Word has length 165 [2024-12-02 12:46:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:54,195 INFO L471 AbstractCegarLoop]: Abstraction has 33240 states and 56503 transitions. [2024-12-02 12:46:54,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 33240 states and 56503 transitions. [2024-12-02 12:46:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 12:46:54,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:54,254 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:54,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:46:54,254 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:54,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2068271352, now seen corresponding path program 1 times [2024-12-02 12:46:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778646704] [2024-12-02 12:46:54,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:46:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778646704] [2024-12-02 12:46:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778646704] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460064214] [2024-12-02 12:46:54,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:54,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:54,407 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:54,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:46:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:54,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:54,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:46:54,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:54,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460064214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:54,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:54,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:54,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344123889] [2024-12-02 12:46:54,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:54,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:54,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:54,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:54,808 INFO L87 Difference]: Start difference. First operand 33240 states and 56503 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:46:55,707 INFO L93 Difference]: Finished difference Result 88003 states and 150232 transitions. [2024-12-02 12:46:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:46:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2024-12-02 12:46:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:46:55,898 INFO L225 Difference]: With dead ends: 88003 [2024-12-02 12:46:55,898 INFO L226 Difference]: Without dead ends: 59324 [2024-12-02 12:46:55,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:55,970 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 98 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:46:55,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1104 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:46:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59324 states. [2024-12-02 12:46:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59324 to 59314. [2024-12-02 12:46:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59314 states, 49652 states have (on average 1.6025336340932892) internal successors, (79569), 49662 states have internal predecessors, (79569), 9614 states have call successors, (9614), 42 states have call predecessors, (9614), 47 states have return successors, (11410), 9612 states have call predecessors, (11410), 9613 states have call successors, (11410) [2024-12-02 12:46:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59314 states to 59314 states and 100593 transitions. [2024-12-02 12:46:58,447 INFO L78 Accepts]: Start accepts. Automaton has 59314 states and 100593 transitions. Word has length 168 [2024-12-02 12:46:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:46:58,447 INFO L471 AbstractCegarLoop]: Abstraction has 59314 states and 100593 transitions. [2024-12-02 12:46:58,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:46:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 59314 states and 100593 transitions. [2024-12-02 12:46:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 12:46:58,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:46:58,586 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:46:58,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:46:58,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 12:46:58,786 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:46:58,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:46:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1365975578, now seen corresponding path program 1 times [2024-12-02 12:46:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:46:58,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649839684] [2024-12-02 12:46:58,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:46:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:46:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:46:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649839684] [2024-12-02 12:46:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649839684] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:46:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197734174] [2024-12-02 12:46:58,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:46:58,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:46:58,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:46:58,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:46:58,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:46:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:46:59,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:46:59,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:46:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:46:59,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:46:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197734174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:46:59,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:46:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:46:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722941849] [2024-12-02 12:46:59,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:46:59,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:46:59,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:46:59,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:46:59,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:46:59,240 INFO L87 Difference]: Start difference. First operand 59314 states and 100593 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:47:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:00,910 INFO L93 Difference]: Finished difference Result 161807 states and 274766 transitions. [2024-12-02 12:47:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:47:00,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2024-12-02 12:47:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:01,342 INFO L225 Difference]: With dead ends: 161807 [2024-12-02 12:47:01,342 INFO L226 Difference]: Without dead ends: 108604 [2024-12-02 12:47:01,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:47:01,418 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 96 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:01,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1104 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:47:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108604 states. [2024-12-02 12:47:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108604 to 108594. [2024-12-02 12:47:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108594 states, 91502 states have (on average 1.596609910165898) internal successors, (146093), 91512 states have internal predecessors, (146093), 17044 states have call successors, (17044), 42 states have call predecessors, (17044), 47 states have return successors, (19904), 17042 states have call predecessors, (19904), 17043 states have call successors, (19904) [2024-12-02 12:47:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108594 states to 108594 states and 183041 transitions. [2024-12-02 12:47:05,165 INFO L78 Accepts]: Start accepts. Automaton has 108594 states and 183041 transitions. Word has length 169 [2024-12-02 12:47:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:05,165 INFO L471 AbstractCegarLoop]: Abstraction has 108594 states and 183041 transitions. [2024-12-02 12:47:05,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:47:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 108594 states and 183041 transitions. [2024-12-02 12:47:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 12:47:05,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:05,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:05,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:47:05,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:05,556 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1677585320, now seen corresponding path program 1 times [2024-12-02 12:47:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027081654] [2024-12-02 12:47:05,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 12:47:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027081654] [2024-12-02 12:47:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027081654] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807521784] [2024-12-02 12:47:05,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:05,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:05,713 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:05,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:47:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:06,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:47:06,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 12:47:06,095 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807521784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:06,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:06,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 12:47:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431816311] [2024-12-02 12:47:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:06,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:47:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:06,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:47:06,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:47:06,096 INFO L87 Difference]: Start difference. First operand 108594 states and 183041 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:47:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:09,222 INFO L93 Difference]: Finished difference Result 202875 states and 342553 transitions. [2024-12-02 12:47:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:47:09,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2024-12-02 12:47:09,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:09,668 INFO L225 Difference]: With dead ends: 202875 [2024-12-02 12:47:09,669 INFO L226 Difference]: Without dead ends: 202576 [2024-12-02 12:47:09,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:47:09,714 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 91 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:09,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1118 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:47:09,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202576 states. [2024-12-02 12:47:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202576 to 202566. [2024-12-02 12:47:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202566 states, 171876 states have (on average 1.5893958435150923) internal successors, (273179), 171886 states have internal predecessors, (273179), 30642 states have call successors, (30642), 42 states have call predecessors, (30642), 47 states have return successors, (36117), 30640 states have call predecessors, (36117), 30641 states have call successors, (36117) [2024-12-02 12:47:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202566 states to 202566 states and 339938 transitions. [2024-12-02 12:47:16,296 INFO L78 Accepts]: Start accepts. Automaton has 202566 states and 339938 transitions. Word has length 170 [2024-12-02 12:47:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:16,296 INFO L471 AbstractCegarLoop]: Abstraction has 202566 states and 339938 transitions. [2024-12-02 12:47:16,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 12:47:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 202566 states and 339938 transitions. [2024-12-02 12:47:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 12:47:16,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:16,464 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:16,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 12:47:16,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:16,664 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:16,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:16,665 INFO L85 PathProgramCache]: Analyzing trace with hash -543506688, now seen corresponding path program 1 times [2024-12-02 12:47:16,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:16,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155262917] [2024-12-02 12:47:16,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:16,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 12:47:16,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155262917] [2024-12-02 12:47:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155262917] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472510343] [2024-12-02 12:47:16,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:16,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:16,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:16,978 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:16,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 12:47:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:17,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:47:17,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:47:17,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:47:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 12:47:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472510343] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:47:17,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:47:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-12-02 12:47:17,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282199372] [2024-12-02 12:47:17,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:47:17,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 12:47:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:17,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 12:47:17,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:47:17,743 INFO L87 Difference]: Start difference. First operand 202566 states and 339938 transitions. Second operand has 28 states, 26 states have (on average 9.76923076923077) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2024-12-02 12:47:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:34,248 INFO L93 Difference]: Finished difference Result 404703 states and 698544 transitions. [2024-12-02 12:47:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-12-02 12:47:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 9.76923076923077) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 169 [2024-12-02 12:47:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:35,354 INFO L225 Difference]: With dead ends: 404703 [2024-12-02 12:47:35,355 INFO L226 Difference]: Without dead ends: 404458 [2024-12-02 12:47:35,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 12:47:35,456 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 5420 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 16797 mSolverCounterSat, 1604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5486 SdHoareTripleChecker+Valid, 5109 SdHoareTripleChecker+Invalid, 18401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1604 IncrementalHoareTripleChecker+Valid, 16797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:35,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5486 Valid, 5109 Invalid, 18401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1604 Valid, 16797 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-12-02 12:47:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404458 states. [2024-12-02 12:47:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404458 to 404022. [2024-12-02 12:47:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404022 states, 342872 states have (on average 1.589881938449334) internal successors, (545126), 342682 states have internal predecessors, (545126), 60972 states have call successors, (60972), 154 states have call predecessors, (60972), 177 states have return successors, (84945), 61199 states have call predecessors, (84945), 60966 states have call successors, (84945) [2024-12-02 12:47:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404022 states to 404022 states and 691043 transitions. [2024-12-02 12:47:50,126 INFO L78 Accepts]: Start accepts. Automaton has 404022 states and 691043 transitions. Word has length 169 [2024-12-02 12:47:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:50,127 INFO L471 AbstractCegarLoop]: Abstraction has 404022 states and 691043 transitions. [2024-12-02 12:47:50,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 9.76923076923077) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (49), 8 states have call predecessors, (49), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2024-12-02 12:47:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 404022 states and 691043 transitions. [2024-12-02 12:47:50,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 12:47:50,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:50,678 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:50,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 12:47:50,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:50,879 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:50,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1633026319, now seen corresponding path program 1 times [2024-12-02 12:47:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351257471] [2024-12-02 12:47:50,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 12:47:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351257471] [2024-12-02 12:47:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351257471] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351252390] [2024-12-02 12:47:51,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:51,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:51,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 12:47:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:51,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:47:51,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:47:51,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351252390] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:51,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 12:47:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408209178] [2024-12-02 12:47:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:51,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:47:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:51,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:47:51,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:47:51,789 INFO L87 Difference]: Start difference. First operand 404022 states and 691043 transitions. Second operand has 9 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 12:47:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:59,859 INFO L93 Difference]: Finished difference Result 406175 states and 694166 transitions. [2024-12-02 12:47:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:47:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 171 [2024-12-02 12:47:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:00,920 INFO L225 Difference]: With dead ends: 406175 [2024-12-02 12:48:00,920 INFO L226 Difference]: Without dead ends: 404416 [2024-12-02 12:48:01,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:48:01,014 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 778 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:01,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3536 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:48:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404416 states. [2024-12-02 12:48:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404416 to 404398. [2024-12-02 12:48:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404398 states, 343141 states have (on average 1.5896992781393071) internal successors, (545491), 342954 states have internal predecessors, (545491), 61076 states have call successors, (61076), 157 states have call predecessors, (61076), 180 states have return successors, (85073), 61310 states have call predecessors, (85073), 61070 states have call successors, (85073) [2024-12-02 12:48:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404398 states to 404398 states and 691640 transitions. [2024-12-02 12:48:15,441 INFO L78 Accepts]: Start accepts. Automaton has 404398 states and 691640 transitions. Word has length 171 [2024-12-02 12:48:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:48:15,442 INFO L471 AbstractCegarLoop]: Abstraction has 404398 states and 691640 transitions. [2024-12-02 12:48:15,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-12-02 12:48:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 404398 states and 691640 transitions. [2024-12-02 12:48:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 12:48:15,995 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:48:15,995 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:48:16,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 12:48:16,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 12:48:16,196 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:48:16,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:48:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 813484070, now seen corresponding path program 1 times [2024-12-02 12:48:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:48:16,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921176486] [2024-12-02 12:48:16,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:48:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 12:48:16,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:48:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921176486] [2024-12-02 12:48:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921176486] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:48:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262532207] [2024-12-02 12:48:16,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:48:16,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:48:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:48:16,385 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:48:16,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bbdde74-737b-4957-91e4-25d2a97559c8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 12:48:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:48:16,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:48:16,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:48:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 12:48:16,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:48:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:48:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262532207] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:48:17,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:48:17,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-12-02 12:48:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709347447] [2024-12-02 12:48:17,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:48:17,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:48:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:48:17,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:48:17,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:48:17,189 INFO L87 Difference]: Start difference. First operand 404398 states and 691640 transitions. Second operand has 23 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (45), 8 states have call predecessors, (45), 7 states have call successors, (45) [2024-12-02 12:48:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:48:38,188 INFO L93 Difference]: Finished difference Result 811446 states and 1421878 transitions. [2024-12-02 12:48:38,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 12:48:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (45), 8 states have call predecessors, (45), 7 states have call successors, (45) Word has length 172 [2024-12-02 12:48:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:48:40,998 INFO L225 Difference]: With dead ends: 811446 [2024-12-02 12:48:40,998 INFO L226 Difference]: Without dead ends: 809589 [2024-12-02 12:48:41,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=454, Invalid=2626, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 12:48:41,190 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 3276 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 8561 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 9580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 8561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:48:41,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 2800 Invalid, 9580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 8561 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 12:48:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809589 states. [2024-12-02 12:49:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809589 to 808751. [2024-12-02 12:49:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808751 states, 686240 states have (on average 1.5897062252273257) internal successors, (1090920), 685874 states have internal predecessors, (1090920), 122146 states have call successors, (122146), 312 states have call predecessors, (122146), 364 states have return successors, (196140), 122612 states have call predecessors, (196140), 122134 states have call successors, (196140) [2024-12-02 12:49:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808751 states to 808751 states and 1409206 transitions. [2024-12-02 12:49:11,257 INFO L78 Accepts]: Start accepts. Automaton has 808751 states and 1409206 transitions. Word has length 172 [2024-12-02 12:49:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:11,257 INFO L471 AbstractCegarLoop]: Abstraction has 808751 states and 1409206 transitions. [2024-12-02 12:49:11,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (50), 8 states have call predecessors, (50), 10 states have return successors, (45), 8 states have call predecessors, (45), 7 states have call successors, (45) [2024-12-02 12:49:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 808751 states and 1409206 transitions.